[llvm-bugs] Issue 6477 in oss-fuzz: llvm/llvm-opt-fuzzer--x86_64-loop_vectorize: ASSERT: VPlans.size() == 1 && "Best VF has not a single VPlan."

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
CC: kcc at google.com, mascasa at google.com, jdevlieg... at apple.com,  
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer Proj-llvm Reported-2018-02-20
Type: Bug

New issue 6477 by ClusterFuzz-External:  
llvm/llvm-opt-fuzzer--x86_64-loop_vectorize: ASSERT: VPlans.size() == 1  
&& "Best VF has not a single VPlan."
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6477

Detailed report: https://oss-fuzz.com/testcase?key=5765686711287808

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-opt-fuzzer--x86_64-loop_vectorize
Fuzz target binary: llvm-opt-fuzzer--x86_64-loop_vectorize
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   VPlans.size() == 1 && "Best VF has not a single VPlan."
   llvm::LoopVectorizationPlanner::setBestPlan
   llvm::LoopVectorizePass::processLoop

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201802190622:201802200626

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5765686711287808

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
more information.

When you fix this bug, please
   * mention the fix revision(s).
   * state whether the bug was a short-lived regression or an old bug in any  
stable releases.
   * add any other useful information.
This information can help downstream consumers.

If you have questions for the OSS-Fuzz team, please file an issue at  
https://github.com/google/oss-fuzz/issues.

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